Abstract:
The results from the first magnetotelluric (MT) survey in Bulgaria on hydrothermal reservoirs are presented. The project was initiated under IndoBulgarian collaborative program supported by Department of Science and Technology, New Delhi, India and Bulgarian Academy of Sciences, Sofia, Bulgaria. The main objective of this study was to search for deep seated reservoirs for the need of geothermal energy use. Field visits were made to 15 sites in Bulgaria to identify the existence of suitable conditions for magnetotelluric investigations. Three reservoirs in Burgas basin (SE Bulgaria) have been selected after complex analysis of available geological, hydrogeological and geophysical data. MT data acquisition and processing are discussed. The results are presented as distribution of apparent resistivity and phase versus frequency. A deep seated conductivity medium is clearly outlined near Polyanovo.